High quality mechanical seals wholesaler

Temperature -20℃ to +120℃
Pressure ≤2.5Mpa
Speed ≤15m/s
Material V,Q1,Q2,U2,U1,B,A,P,E,V,F,G


Mechanical seals are extremely advantageous in various applications which includes use in pumps. The most current developments in induction sealing enables for the utilization of a foil sealed to the container. This eliminates the usage of a closure. The foil is either reeled or pre-reduce and is placed and pressed down to the material. This activates the induction approach hence bonding the seal to the container. This development is known as capless induction sealing.

The price tag of seals may possibly also discourage you because they are a lot a lot more expensive than packings. Direct replacement mechanical seals suitable for other usual companies. Double Jacketed Gaskets: These have double protective layers and are also created from metallic and filler materials. The root causes of failure for the mechanical seals for 16 hot hydrocarbon service pumps (with operating temperatures in excess of 250°C) are discussed here, and options are demonstrated to get rid of failures and boost plant reliability.

Type: Elastomeric bellow mechanical seal


Temperature:-20℃ to +120℃





• For plain shafts

• Single and dual seal

• Elastomer bellows rotating

• Unbalanced

• Independent of direction of rotation

• No torsion on bellows and spring 

• Conical or cylindrical spring

• Metric and inch sizes available 

• Special seat dimensions available

• US Patent No. 6.220.601


• Fits into any installation space due to smallest outer seal diameter

• Important material approvals available

• Individual installation length can be achieved

• High flexibility due to extended selection of materials

• Universal application (standardization))

Operating range:

Shaft diameter: d1 = 10 … 100 mm (0.375" … 4")

Pressure: p1 = 12 bar (174 PSI), vacuum…0,5 bar (7.25 PSI), up to bar (14.5 PSI) with seat locking

Temperature: t = –20 °C … +140 °C (–4 °F … +284 °F)

Sliding velocity: vg = 10 m/s (33 ft/s)

Axial movement: ±0.5 mm


Seal face: Carbon graphite antimony impregnated (A), 

Carbon graphite resin impregnated (B), Silicon carbide (Q1) 

Seat: Silicon carbide (Q1, Q2), Aluminium oxide (V)

Elastomer: NBR (P), EPDM (E), FKM (V), HNBR (X4)

Metal parts: CrNiMo steel (G)

Standards and approvals:

• EN 12756

• Various material approvals e.g. FDA, WRAS, KTW, ACS, W270, NSF available (depending on type and material combinations). Please inq

Recommended applications:

• Chemical industry

• Pulp and paper industry

• Water and waste water technology

• Cooling fluids 

• Media with low solids content

• Pressure oils for bio diesel fuels

• Circulating pumps

• Submersible pumps

• Multi-stage pumps (non-drive side)

• Water and waste water pumps

• Oil applications 

Item Part no. to DIN 24250 Description:

1.1 472 Seal face

1.2 481 Bellows

1.3 485 Drive collar

1.4 484.1 “L” ring (spring collar)

1.5 474 Washer

2 477 Spring

3 475 Seat

4 412 Rubber cup

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